.mask {
  width: 100vw;
  height: 100vh;
  background: rgba(255, 255, 255, .58);
  position: fixed;
  top: 0;
  left: 0;
}

.loading_box {
  width: 100%;
  height: 100%;
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  z-index: 1000;
}